The 4th layer in the Crossing Path Self-defense systems emergency preparedness system. The extended EDC (every day carry) covers the need to replenish your supplies and keep up the tasks of survival when your ready supplies (food, water etc) run out, as they might in an extended emergency.
Covers the concept of replenishment and provides some sample gear list with the idea of keeping it all practical, simple and affordable.
A great way to get into the subject or provoke thought in the more experienced.